Rotary blower or pump.



L. N. PERKINS.

ROTARY BLOWER 0R PUMP.

APPLICATION FILED M1126, 191s.

'Patented Deo. so, 1913.

2 SHEETSSHEET l.

L. N. Pmmms.

ROTARY BLOWER 0R PUMP.

' APPLIoATIoN FILED 11:13.26, 1913. l 1,982,903. i Patented Dec. 3o, 1913.

'2 BEHEER-SHEET 2.

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ROTARY BLOWER OR PUMP.

messes. i

Spcication of Letters Patent.

, Application led February 26, 1913. Serial No. 750,825.

To all fuf/iomit may concern Be it known that I, LoUIs N. PERKINS, a citizen of the United States of America, residing at Connersville, in the county of Fayette and State of Indiana,haveinvented certain nev.' and useful Improvements in Ro tary Blowers or Pumps, of which the follow ing is a specification.

This invention relates to rotary blowers, or pumps, and it has for its object the provision of an improved device of this character constructed in such manner as to reduce friction between the Working parts tol a minimum, provide for'the leiiicient oiling of all working parts, provide a device consist-I ing of so few parts that Athe maximum of economy may be achieved and one constructed in such manner that the device may be very readily 4and easily assembled. m

Further objects and advantages of the invention ivill be set forth in the detailed de scription which now follovvs. y

In the accompanying drawings, Figure l is a view partly in side elevation and partly in section of a blower constructed in accordance with the invention. Fig. 2 is a view partly in end elevation and partly in section thereof. Fig. 3 is a detailed end elevation of the rotor. Figi #l is a detailed perspective View of one of the rollers hereinafter' described. Fig. 54 is a detailed perspective view of a guide hereinafter described, and Fig. 6 is an inner face view of one ofthe cap plates of the blower.

Like numerals designate corresponding parts in all of the iigures of the drawings.

Referring to the drawings it Will be seen that the blower comprises a casing 5 having,` an intake port 6 and a discharge port 7 formed therein. Cap plates 8 and 9 have annular channels l0 formed in their inner faces, said channels being eccentrically arranged with relation to the bearings of the main shaft l1. This shaft is supported in bearings comprising rings l2 and 13 and balls 1%. -Ring 13 is supported by a collar l5, said collar being supported in turn by l ribs 16 from cap plate 8. A rotor 17 is se` cured to the shaft and rotates therewith. This rotor is recessed at its opposite ends, as

indicated at lfor the reception of the guides 19 shown in Fig. 5. These guides carry arcuate ribs 2O winch travel 1n chaninels l0. The channels l() While being located eccentrically with relation to shaft 1l is located concentrically with relation to the This bodily rotation is imparted to the guidesand blades by the rotor 17, said rotor having a Iplurality of recesses 24 formed therein for the reception of rollers 25, said rollers having the necessary oscillatory motion in the seats formed by said recesses. The blades 22 are seated in radial slots 25 formed in the rollers and have sliding movement in said slots. An oil chamber 26 is formed centrally in the rotor and an oil port 27 leads longitudinally through the shaft to said chamber. The rollers are provided with ports 28 Which at certain times during the rocking movement of said rollers are brought into communication with ports 29 formed in the rotor and leading to the oil chamber 26. This alinement of ports QSand 29 takes place when the particular roller affected, is at the bottom of the casingn 5 and at this time a limited amount of oil is supplied tofthe blades 12 tofrender their sliding action Within the rollers free and easy.' This oil also linds its Way about the periphery. of

v the rollers and lubricates said rollers during their rocking or oscillatory movement.

lThe structure herein shown presents a -number of very important advantages, While comprising few and simple elements. These velements impart 'the necessary positive movement tothe blades to maintain their outer edges in conjunction with the inner periphery of the casing 5 Without at the same time forcing said parts into actual contact With said periphery. The friction is correspondingly reduced. The peculiar arrangement of parts shown for accomplishing this result renders the device capable of being easily and readily assembled. The guides lie Within the recessed ends of the rotor and act in conjunction with the blades to impel the air or other fluid through the casing 5. The oiling arrangement shown and described vvhile maintaining a liberal sup ply of oil always available, permits the passage of this oil to the Working; parts only during a limited portion of the' cycle of operation, so that the lubricant is not Wasted,

Patented Dec. 3), l 913.

the inertia ot' this solid rotor causes it to act much after the manner of a balancing Vwheel.

The portion of the guides carrying the arcuateribs and` said arcuate ribs cach lill substantially one-third of the annular chair nels 10, so that the ends of these parts abut each other and any tendency et the ribs to drag and bind in these channels is prevented While the elements shown and described are Welladapted to serve the purposes for which they are intended, it is to be understood that the invention is not limited to the precise construction set forth, but includes Within its purview, such changes as :nav be made Within the scope of the appended claims.

Having described my inventionl` what l claim is:- Y

l. In a device or the character described, the combination with a casing, a shaft eccentrically mounted with relation thereto, a rotor disposed -Within said casing and carried bv said shaft, an oil chamber formed within sald rotor, means tor conducting oil through said shaft to said chamber, there being a plu! rality of arcuatel recesses formed in the said rotor and opening to the outer face thereof, rollers seated in said recesses, said rollers having radial slots formed therein andsaid rollers having rocking movement in said recesses, ports formed in said lrollers and portsv formed in said rotor, said latter port- 'establishing communication between t-he 2. in a device of the character described, i

of said guides.`

the combination with a casing, a shaft eccentrically mounted with relation thereto, a rotor disposed `Within said casing and carried by said shaft, an oil chamber formed within said rotor, means for conducting oil through said shaft to said chamber, there being a plurality of arcuate recesses formed in the said rotor and opening to the outer face thereof, rollers seated in said recesses, said rollershaving` radial slots formed thereinv and said rollers having rocking movement in said recesses, ports formed in said rollers and ports formed in 4said rotor, said latter port establishing communication between the ports of the rollers and said oil chamber at a predetermined point in the travel of the rotor, guides secured to said blade and/arcuateribs carried by said guides there being an annular channel formed concentrically with one of the end Walls of the casing within which said ribs engage. v

In a device of the lcharacter described, the combination with' a easing, a shaft eccentrically mounted nitl'rrelation thereto, arotor disposed within said casil'lg and carried b v said shaft, an oil chamber'forined with* in' said rotor, means for conducting' oil through said shaft to saidA chamber,` there being' a plurality of arcuate recesses termed in the said rotor and opening to the outer tace thereof, rollers seated in said recesses,

said rollers having'- radialslotsformcd there-l -m and said rollers having rocking movement in said recesses, ports formed in said rollers and ports formed in Said'rotor, said'iattei" portl establishing communication between the ports of the rollers and said oil chanr ber at a predetermined point inlthe tra-vel of the rctor, guides secured to said blade and arcuate ribs carried by said guides, there beingr an annular channel i formed concentrically with one of the end Walls of the casing Within which said ribs engage, the ends ot les saidrotor being recessed font-he reception ln testimony whereof I athx my signature in presence of two Witnesses."

' Louis N. rasante.

Witnesses RAYMOND S. SPRINGER, ALLEN Wilnis. 

